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Help Creating a Failover SQL Cluster Server 2008  R2

Posted on 2014-11-02
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Last Modified: 2014-11-08
I am a beginner at configuring a SQL cluster.  I have done so for a DHCP cluster previously.

My questions are:

- The most important question:  Do you run the failover clustering configuration in Server 2008 R2 server manager first before installing SQL or do you install and configure SQL 2008 on one or both nodes on the two servers your going to cluster first, then run the Failover cluster management configuration in server manager?

- Do you run failover cluster manager on one or both servers prior to configuring your cluster?

- When do you connect to the SQL database?  I am going to be importing a backup of another database.  Does it go on both servers in the cluster prior to creating the cluster?

- When you set up iSCSI and attach it to the two servers, does it matter if the drive letters match?

- does the IP of the second nic need to be a private ip such as 192.168.X.X or does it need to be on the same subnet as NIC 1 which is the actual server management IP?

-  Does the cluster IP need to have an IP that matches the 2 servers subnets or an IP that matches the 2nd nic which i'm guessing is used for heart beat purpuses?

Do you have to install the application server role on each server prior to setting up the cluster ?

- Any other important information you can point out?

Thanks in advance.
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Question by:Conrad_Bel
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Expert Comment

by:MadHatterAdmin
ID: 40418144
1. You need to configure shared storage. One drive for quorum, one for the database and one for logs.

2. Once both nodes are configured for the cluster, cluster manager can be ran from any client or each node.

3. Drive letters need to match

4. Remember that storage hence data is shared betweeen both servers but at any given point in time only one host is the active cluster node, hence holding control of the data when you restore a database it will be restored to the active cluster node

5. I would recommend both servers be on the same subnet

6. If you have a server vlan, the heartbeat can traverse management traffic. If these are virtual servers create you can also create a standalone vswitch for heartbeat traffic or run a crossover cable to a dedicated nic. There's more than one way to skin a cat but it doesnt have to be on the same subnet

7. Once the cluster is setup and tested that u can fail between shared disk. Run the sql server installation and select the cluster option. Once the sql installation completes successfully, you need to run the setup on the other host with the cluster option and the sql installtion will do everything else for you.

Reference this video to get you going:

https://www.youtube.com/watch?v=x1zlS5OAuWA
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Author Comment

by:Conrad_Bel
ID: 40427369
Great,
Another question:  When i create the DTC should it be assigned to it's own disk?  Should i create a disk solely for the DTC?
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MadHatterAdmin earned 500 total points
ID: 40427909
If memory serves me right the DTC will be grabbed by the active cluster node so i would created a shared disk for this also. I'll allow someone else to chime but i dont see it hurting anything putting it on shared disk.
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Author Comment

by:Conrad_Bel
ID: 40429016
Thanks for all your input madhatter.  Have a great day.
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Expert Comment

by:MadHatterAdmin
ID: 40430413
no problem and i hope you get everything going.
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